For all binary resources created by fcrepo-4.5.1 and above, the UI page for the fcr:metadata resource has two identical sections "Properties" and "Content Properties" that each list the same set of properties
For all binary resources created with fcrepo-4.5.0 and below (even if viewed through a newer fedora instance, e.g. adding a binary with fcrepo-4.5.0, then upgrading to 4.5.1 and viewing the binary), the UI page for fcr:metadata displays only one "Properties" section.
There is no discernable difference between the RDF of resources that display the peoperties duplication vs those that do not.
For example, if a 4.6.0-RC2 repository has two binary resources, one created originally by fcrepo-4.5.0, and one created by 4.6.0; the UI for the fcr:metadata resource created by 4.5.0 will be correct, while the UI for the fcr:metadata resource created by 4.6.0-RC2 will show duplication. Examining the fcr:metadata RDF for each resource shows no difference other than the obvious differences in timestamps and URIs.